3D vector geometry involves using vectors to represent and analyze objects and relationships in three-dimensional space. This includes points, lines, and planes, and calculations involving distances, angles, and intersections. Vectors are essential for describing physical quantities like force, torque, and momentum in physics
→OP = xî + yĵ + zk
, where î, ĵ, and k are unit vectors along the x, y, and z axes, respectively